Will this cpu work?

[fwfaulkner]

Will the Intel - Core i7-7700K 4.2GHz Quad-Core Processor work in the msi z170i gaming pro ac if so how will it do?

 

[R_1]

https://www.msi.com/Motherboard/support/Z170I-GAMING-PRO-AC#support-cpu
"Core i7 Kabylake i7-7700K 100 4.2 1M 8M B0 91 HDGraphics630 1150MHz 7980v1A.zip"
from the MSI page, the CPU is supported with the proper BIOS upgrade, if you do not already have the proper BIOS you will need to use a 6th generation CPU to flash the BIOS to support the 7th generation 7700k.

 

[shmoochie]

Yes, it is compatible. You will just need to update the bios to the latest version.

 

[Dark Lord of Tech]

It will only work if the BIOS loaded on the motherboard is: 7980v1A.zip.
If not , it will not boot.